Maize white line mosaic virus

Maize white line mosaic virus (MWLMV) is a plant virus that primarily affects maize crops. It is a member of the Potyviridae family of viruses, which are known for their rod-shaped particles and single-stranded RNA genomes. MWLMV is particularly prevalent in North America, where it can cause significant yield losses in maize crops.

History

The Maize white line mosaic virus was first identified in the mid-20th century, during a period of intensive research into plant viruses. It was named for the distinctive white lines that appear on infected maize plants, which are a key symptom of the disease.

Transmission

MWLMV is transmitted by several species of aphids, which acquire the virus when they feed on infected plants. The virus can also be spread through the use of infected seed, although this is less common.

Symptoms

Infected plants typically display a range of symptoms, including chlorotic streaks, mosaic patterns, and the characteristic white lines from which the virus takes its name. In severe cases, the disease can cause stunting and reduced yield.

Management

Management of MWLMV primarily involves the use of resistant maize varieties, as well as practices designed to reduce aphid populations. Chemical control can also be effective, although it is generally less preferred due to its potential environmental impact.

Research

Research into MWLMV is ongoing, with scientists working to better understand the virus's biology and develop more effective control strategies. This includes the use of genetic engineering to create maize varieties that are resistant to the virus.

See also

• Maize
• Plant virus
• Potyviridae
• Aphids
• Genetic engineering